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Two alternators


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spinergy
Novice

Dec 6, 2009, 5:49 PM

Post #1 of 21 (2555 views)
Two alternators Sign In

I'm thinking of adding a second alternator to my hilux, the original one wont supply the load I'm planning for it.
I can install a second one where the air con pump used to be however I'm wondering if the voltage regulators will fight each other and how to wire to avoid this.
Thanks


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Dec 6, 2009, 5:59 PM

Post #2 of 21 (2552 views)
Re: Two alternators Sign In

spinergy; I think you are asking for some real problems, here. How about adding a second battery with an isolator? Would be much easier, much cheaper, and accomplish the same thing.
Loren
SW Washington


spinergy
Novice

Dec 6, 2009, 9:44 PM

Post #3 of 21 (2548 views)
Re: Two alternators Sign In

I already have a solenoid driven isolator and two 660cca batteries.
I'm pulling a Kilowatt when I'm running all my extras, I'd rather have a way of powering the electrics that doesn't rely on the battery's.


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Dec 7, 2009, 3:28 PM

Post #4 of 21 (2536 views)
Re: Two alternators Sign In

spinergy; A kilowatt???? What are you doing, powering a hospital? LOL...You need more specific advise than I can give. Sorry. Hopefully, one of the other guys in the forum may have suggestions.
Loren
SW Washington


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 7, 2009, 5:02 PM

Post #5 of 21 (2534 views)
Re: Two alternators Sign In

Your trying to light up a city with a flashlight.

That car just wasn't engineered for that kind of current flow and no matter what you do, your going to overload something.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



spinergy
Novice

Dec 7, 2009, 6:16 PM

Post #6 of 21 (2525 views)
Re: Two alternators Sign In

Lol
Not quite a hospital, I have 10 x 100w 4x4 lights hanging off various parts of the truck. Seems excessive I know but necessary for what I do.
Plus there is the 2500w inverter but I never pull more than 700-800w off it.
I have replaced all the wiring with 4 gauge so the current flow shouldn't be an issue.
By my maths I need 70A at 14.4V to run the lights for any length of time which the alternator can supply at full load. however it's not good to run an alternator at full load for more than a few minutes so if I add a second I can pull 35A from each which they should be happy to sustain.
This will cost me just under 3Hp in power but I can live with this.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 7, 2009, 6:22 PM

Post #7 of 21 (2520 views)
Re: Two alternators Sign In

Why not just a portable generator recharging the system to use when the load is on?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



spinergy
Novice

Dec 7, 2009, 6:26 PM

Post #8 of 21 (2516 views)
Re: Two alternators Sign In

Hard to run safely when off road, plus more gear to lug around taking up space and seems kinda pointless carrying a generator that runs only when there is another engine already running


(This post was edited by spinergy on Dec 7, 2009, 6:31 PM)


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Dec 7, 2009, 7:05 PM

Post #9 of 21 (2499 views)
Re: Two alternators Sign In

spinergy; We have several 'rebuilders' in the area. Have you checked into having an alternator 'built' for your purpose? As HT said, not sure the vehicle can handle all of that. But, I'm not an electrician.Unsure
Loren
SW Washington


spinergy
Novice

Dec 7, 2009, 7:11 PM

Post #10 of 21 (2497 views)
Re: Two alternators Sign In

Yea I was looking at doign that. I can get someone to wind a 200Amp one or buy a high output alternator and make a mount for it but I was hoping not to spend $1000nzd if I didnt have to. I know you can run two alternators togeather but you have to play some games with the regulators so stop them fighting each other. I was just wondering if you guys knew what I needed to do.


Loren Champlain Sr
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Loren Champlain Sr profile image

Dec 7, 2009, 7:31 PM

Post #11 of 21 (2490 views)
Re: Two alternators Sign In

spinergy; Okay, bud, I got you figured out. You are running around the outback, at night, searching for Roos'. Right? LOL. We've got an old timer in the forum, but haven't seen him lately. Not sure if he's in NZ or with the convicts? LOL
You could try googling "DR.ELECTRICS" and see if you can find him? He's really sharp when it comes to auto electrics.
Loren
SW Washington


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 7, 2009, 7:52 PM

Post #12 of 21 (2486 views)
Re: Two alternators Sign In

You can find him at Justanswer.com in the electrical category but that help isn't free.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



spinergy
Novice

Dec 8, 2009, 2:37 PM

Post #13 of 21 (2470 views)
Re: Two alternators Sign In

Thanks guys, ill try to contact him


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 8, 2009, 4:15 PM

Post #14 of 21 (2464 views)
Re: Two alternators Sign In

I know he's more of a household specialist. I don't know how much automotive experience he has if we're talking about the same person.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Dec 8, 2009, 6:14 PM

Post #15 of 21 (2459 views)
Re: Two alternators Sign In

This guy


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 8, 2009, 6:16 PM

Post #16 of 21 (2453 views)
Re: Two alternators Sign In

bad link Sidom



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Dec 8, 2009, 6:18 PM

Post #17 of 21 (2449 views)
Re: Two alternators Sign In

So it is....Mad

http://autoforums.carjunky.com/...rics;t=search_engine


Ok...that one worked for me......guess I should've checked the 1st one.....d'oh


(This post was edited by Sidom on Dec 8, 2009, 6:20 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 8, 2009, 6:20 PM

Post #18 of 21 (2444 views)
Re: Two alternators Sign In

That one doesn't work for me either



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Dec 8, 2009, 6:21 PM

Post #19 of 21 (2440 views)
Re: Two alternators Sign In

Try it again HT


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 8, 2009, 6:23 PM

Post #20 of 21 (2435 views)
Re: Two alternators Sign In

Yep, that worked. I forgot about him. Different guy than I was thinking of.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Dec 8, 2009, 6:24 PM

Post #21 of 21 (2432 views)
Re: Two alternators Sign In

http://www.motolec.com.au I'm guessing the "au" at the end means he's with the convicts in Australia? LOL
Loren
SW Washington






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